澄む

What does 澄む mean in English?

1. to become clear (water, air, etc.); to become transparent(v5m, vi)
2. to resonate clearly (e.g. voice)(v5m, vi)
3. to become serene; to become tranquil; to be free of worries(v5m, vi)
4. to pronounce as an unvoiced sound(v5m, vi)